For access control system, traditional method is to use fingerprint, password or IC card. All these methods have their pros and cons. With the pupulor application of mobile phone qr code, qr code is also used in access control system. Due to its high security level and convenience, it is used more and more to replace traditonal access control methods as below:

When you want a scanner module to scan phone screen code well, you need choose a fixed mounted barcode scanner to get better formance. Sometimes due to space restriction, fixed mounted scanner can not be used for they usually come with enclosure, which makes its size bigger. In such cases, customers now can choose LV4200 2D barcode scanner module.

LV4200 Scanner can capture on-screen barcodes effortlessly even when the screen is covered with protective film or set to its lowest brightness level (in low battery condition). LV4200 can be used in cases where Rakinda 4500 serious scanners are used.

FAQ
Q1: Can I get some samples? Are they free?
A1: We support 1pc sample order. Samples should be paid.
Q2: Can I get extra cables for the scanners?
A2: Yes you can. We will provide according to your request.
Q3: How can I buy?
A3: We are trade assurance supplier at Alibaba. You can start online order directly. Or pls contact us first according to the contact info. We will send you proper link directly.
Q4: What is your payment method?
A4: We accept online credit card, TT, Paypal, Western Union.
Q5: Can I visit your factory:
A5: Yes, you are warmly welcome.
Q6: How long is your warranty time:
A6: 1 Year.
Q7: Where can we download the user manual of the scanners?
A7: We will send by email after you get samples.
Q8: What's the lead time?
A8: For sample, it is typically within 3 days. For bulk order, it depends on quantity and model you order.
Q9: Can you provide OEM service?
A9: Yes. We need further discuss about details.
Q10: How do you ship the scanners usually?
A10: Since it is light and compact, we usually use DHL, UPS, Fedex, TNT and post air mail.